in vitro plant structure In vitro growth is defined as microbe-free growth in a sterile, culture environment, usually in the laboratory. An example of a sterile culture environment is growth on or in a nutrient medium in a Petri dish, culture flask or test tube. Microbes may be intentionally added to the culture environment, such as in co-culture with Agrobacterium. PO:0000004 estructura vegetal in vito (Spanish, exact) 培養下植物構造 (Japanese, exact) plant_anatomy PO_GIT:64 A plant structure (PO:0009011) that is grown or maintained in vitro. plant structure